Ir Doping-Induced Superconductivity in the SmFeAsO System

Chen YL; Cheng CH; Cui YJ; Zhang H; Zhang Y; Yang Y; Zhao Y

Journal of the American Chemical Society, Vol.131, No.30, 10338-10338, 2009

Chen YL, Cheng CH, Cui YJ, Zhang H, Zhang Y, Yang Y, Zhao Y

The 5d transition metal Ir is successfully doped for Fe in SmFeAsO to induce superconductivity with T-c = 16 K at a doping level of similar to 15 atom %. Ir doping decreases the As-Fe-As bond angle, 8; this behavior is different from the change in B for the system with doping charges in the charge-reservoir layers.